在Matlab中用作索引的随机数 [英] Random number to be used as index in matlab

问题描述

我无法获取矢量packet_send的整数索引.(基本上，我正在生成1到100之间的随机索引).当我看到用作索引的长度"类为double时，这意味着rand函数返回double值，因此我厌倦了通过将其类型转换为int16将其转换为整数.但是我仍然没有得到想要的长度，因此我可以将其用作向量的索引.

Well I am unable to get the integer index for the vector packet_send. ( Basically I am generating a random index between 1 to 100). When I saw the class of "lengths" which I am using as index it is double, that means rand function returns double value, so I tired converting it to integer by typecasting it to int16. But still I am not getting the desired lengths, so that I can use it as index for the vector.

for time_slot = 1:1:number_of_slots    
       p = randint(1)*prob;
        lengths =int16( round(rand(1) * max_length)); % lengths value between 1 to 100.. as per the range decided
        if (p == prob)
            packet_send(lengths) = packet_send(lengths) + 1;
            total_number_of_packets = total_number_of_packets + 1 ;
        end
    end

推荐答案

您可以使用

You can use randi to create random integers. For your code example, this could read:

lengths = randi(max_length, 1);

您还可以在循环开始之前绘制所有随机索引:

You could also draw all the random indices before the loop starts with:

allLengths = randi(max_length, number_of_slots);

〜编辑〜
如果 randi 在您的Matlab版本中不可用，则可以使用:

~edit~
If randi is not available in your version of matlab, you can use:

lengths = floor(rand(1)*max_length)+1;

这篇关于在Matlab中用作索引的随机数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！